title: Initial clinical trials with a tubless lithotriptor.
abstract: The Medstone 1050 is a new tubeless lithotriptor developed in the United States. Under Food and Drug Administration guidelines a human treatment protocol has been developed. The first 50 patients treated at a single site and followed for a minimum of 3 months are presented. All stones treated were 3 cm. or less in longest dimension and located in the renal pelvis, calices or proximal ureter. An adequate fragmentation rate of 90% was achieved in this group. There were no significant complications in any patient. A larger multicenter study presently is underway.
authors.affiliation: Department of Urology, Michael Reese Hospital and Medical Center, Chicago, Illinois.
authors.forename: S B
authors.initials: SB
authors.lastname: Lipson
authors.forename: L S
authors.initials: LS
authors.lastname: Ross
authors.forename: L P
authors.initials: LP
authors.lastname: Sonda
mesh_terms: D006801:Humans; D007669:Kidney Calculi / Q000628:therapy; D008096:Lithotripsy / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D014514:Ureteral Calculi / Q000628:therapy